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91bc4822c3
linux/net
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Alexei Starovoitov 91bc4822c3 tc: bpf: add checksum helpers 
Commit 608cd71a9c ("tc: bpf: generalize pedit action") has added the
possibility to mangle packet data to BPF programs in the tc pipeline.
This patch adds two helpers bpf_l3_csum_replace() and bpf_l4_csum_replace()
for fixing up the protocol checksums after the packet mangling.

It also adds 'flags' argument to bpf_skb_store_bytes() helper to avoid
unnecessary checksum recomputations when BPF programs adjusting l3/l4
checksums and documents all three helpers in uapi header.

Moreover, a sample program is added to show how BPF programs can make use
of the mangle and csum helpers.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-06 16:42:35 -04:00
..
6lowpan 6lowpan: nhc: add other known rfc6282 compressions 2015-02-14 23:08:44 +01:00
9p Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
802 net: Kill dev_rebuild_header 2015-03-02 16:43:41 -05:00
8021q vlan: implement ndo_get_iflink 2015-04-02 14:05:00 -04:00
appletalk appletalk: Use eth_<foo>_addr instead of memset 2015-03-03 17:01:37 -05:00
atm atm: Use eth_<foo>_addr instead of memset 2015-03-03 17:01:37 -05:00
ax25 ax25: Fix the build when CONFIG_INET is disabled 2015-03-05 13:17:39 -05:00
batman-adv dev: introduce dev_get_iflink() 2015-04-02 14:04:59 -04:00
bluetooth Bluetooth: Unify advertising data code paths 2015-03-26 03:30:29 +01:00
bridge netfilter: Pass nf_hook_state through nft_set_pktinfo*(). 2015-04-04 12:54:27 -04:00
caif Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
can can: introduce new raw socket option to join the given CAN filters 2015-04-01 11:28:22 +02:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2015-02-19 14:14:42 -08:00
core tc: bpf: add checksum helpers 2015-04-06 16:42:35 -04:00
dcb net/dcb: Add IEEE QCN attribute 2015-03-06 21:50:02 -05:00
dccp inet: fix double request socket freeing 2015-03-23 21:40:48 -04:00
decnet netfilter: Make nf_hookfn use nf_hook_state. 2015-04-04 12:31:38 -04:00
dns_resolver
dsa dsa: implement ndo_get_iflink 2015-04-02 14:05:01 -04:00
ethernet ethernet: Use eth_<foo>_addr instead of memset 2015-03-03 17:01:38 -05:00
hsr net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface. 2015-03-01 13:40:23 -05:00
ieee802154 ieee802154: don't export static symbol 2015-03-14 17:11:31 +01:00
ipv4 netfilter: Pass nf_hook_state through arpt_do_table(). 2015-04-04 13:26:52 -04:00
ipv6 netfilter: Pass nf_hook_state through nft_set_pktinfo*(). 2015-04-04 12:54:27 -04:00
ipx net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
irda Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-09 23:38:02 -04:00
iucv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
key xfrm: simplify xfrm_address_t use 2015-03-31 13:58:35 -04:00
l2tp netlink: implement nla_get_in_addr and nla_get_in6_addr 2015-03-31 13:58:35 -04:00
lapb
llc net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
mac802154 mac802154: cleanup concurrent check 2015-03-27 19:18:50 +01:00
mpls mpls: In mpls_egress verify the packet length. 2015-03-12 23:05:04 -04:00
netfilter netfilter: Make nf_hookfn use nf_hook_state. 2015-04-04 12:31:38 -04:00
netlabel netlink: implement nla_put_in_addr and nla_put_in6_addr 2015-03-31 13:58:35 -04:00
netlink rhashtable: provide len to obj_hashfn 2015-03-25 17:18:33 +01:00
netrom net: Kill dev_rebuild_header 2015-03-02 16:43:41 -05:00
nfc net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
packet af_packet: pass checksum validation status to the user 2015-03-23 22:01:28 -04:00
phonet net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
rfkill Last round of updates for net-next: 2015-02-04 14:57:45 -08:00
rose net: Kill dev_rebuild_header 2015-03-02 16:43:41 -05:00
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
sched pkt_sched: fq: correct spelling of locally 2015-04-01 22:52:29 -04:00
sctp sctp: avoid to repeatedly declare external variables 2015-03-25 11:40:16 -04:00
sunrpc sunrpc: make debugfs file creation failure non-fatal 2015-03-31 14:15:08 -04:00
switchdev switchdev: fix stp update API to work with layered netdevices 2015-03-23 16:44:56 -04:00
tipc tipc: simplify link mtu negotiation 2015-04-02 16:27:12 -04:00
unix net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
vmw_vsock net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
wimax
wireless Lots of updates for net-next; along with the usual flurry 2015-03-31 16:39:04 -04:00
x25 net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
xfrm xfrm: simplify xfrm_address_t use 2015-03-31 13:58:35 -04:00
compat.c net: socket: add support for async operations 2015-03-23 16:41:36 -04:00
Kconfig kconfig: use bool instead of boolean for type definition attributes 2015-01-07 13:08:04 +01:00
Makefile mpls: Refactor how the mpls module is built 2015-03-04 00:26:06 -05:00
socket.c net: socket: add support for async operations 2015-03-23 16:41:36 -04:00
sysctl_net.c